China-based manufacturing | responsive support for U.S. and global buyers

White, black, and custom color masterbatch from Yuyao, China.

Sinfone is the export-facing brand of Yuyao Xinfeng Plastic Chemical Co., Ltd., a masterbatch manufacturer with operating history traced to 2007. Based in Yuyao, Zhejiang, with factory operations in Simen Town Industrial Park, we support white masterbatch, black masterbatch, and custom color matching programs while actively seeking long-term cooperation with U.S. and other overseas buyers.

View Product Families White, black, ABS-focused white, and custom color capability Send an Inquiry Sampling, application review, and direct follow-up

Operating history traced to 2007

10-20 years of color-matching experience

Factory operations in Simen Town Industrial Park

Samples and supporting documents on request

Company storefront A clear local identity helps buyers see who they are speaking with before deeper product discussion.

Factory environment Factory visuals help new buyers understand that the business is backed by a real operating base in China.

Production equipment Equipment visuals help buyers connect company information with actual compounding and processing work.

Custom color projects welcome If you provide a sample, plaque, pellet, chip, or color card reference, we can discuss matching and sampling.

Entering the U.S. market We are working to support clearer communication with U.S. buyers while staying transparent about our China manufacturing base.

Real factory visuals Factory, equipment, and process visuals are shown so buyers can see a real operating business behind the inquiry.

Direct review Initial inquiries, sampling needs, and product-fit questions are reviewed directly so we can respond more carefully.

What we currently offer

Three clear starting directions for inquiry.

Most new inquiries can start in one of three places: white masterbatch, black masterbatch, or custom color masterbatch. We keep those directions clear so buyers can quickly see whether our current scope matches their project.

White Masterbatch

Includes grade 3450 and an ABS-focused white option for buyers discussing appliance housings, film, and other appearance-sensitive applications.

General-use white ABS-focused option

Explore white family

Black Masterbatch

Grade 2016 can be discussed for injection, blow molding, and film applications where buyers want a practical black masterbatch with good dispersion.

Injection and film Project-based customization

Explore black family

Custom Color Masterbatch

Custom color matching is one of our most important strengths. Buyers can start with a sample, plaque, chip, pellet, or color card reference and move into direct review.

Sample-led matching Color card reference

Explore color capability

Who we are

Color-matching and masterbatch production rooted in Yuyao.

Our team focuses on color matching, masterbatch development, and production for packaging, household appliances, pipe and sheet, consumer goods, and automotive electrical applications. We believe buyers should be able to see clearly where the product comes from, what process directions we support, and how we handle inquiry review.

See Company Background Review Trust Materials

Factory interior and storage area — **Factory interior** Storage and packaging visibility that helps buyers confirm a real operating base.

Production equipment and processing area — **Production equipment** Equipment visuals that support practical discussion around compounding and day-to-day manufacturing.

Custom color workflow

If you can provide an approved sample, plaque, pellet, chip, or color card reference, we can review a custom color masterbatch project instead of limiting the discussion to stocked shades only.

Processing coverage

Company materials describe process coverage across extrusion, injection molding, rotational molding, blow molding, blown film, wire drawing, and calendering, depending on the project and resin system.

Quality and document support

Certificates, relevant reports, and project-specific technical support can be provided on request, backed by in-house testing and practical production review.

Best way to start

Send your target product family, resin, process, target color direction, and any sample or reference you already have. That is usually enough for us to review whether white, black, or custom color masterbatch is the best starting point.

Start with Contact Details